Gaseous-fuel mixer.



J. T CURTIS.

GASEOUS FUEL MIXER. APPITICATION FILED JUNE 2a, 1916.

Patented July 17, 1917 recast e.

To all whom it may concern: Be it known that T, JOSEPH citizen of theUnited States, resi mgat-Milford, in the county of Caroline and State ofVirginia, have invented certain new an useful'lmprovements inGaseous-Fuel Mixers of which the following is a full, clear, and exactspecification.

This invention relates to devices for promoting the'intimate mixture ofgas and air foruse as fuel for internal combustion engines, and has forits object to provide an improved device of "simple construction whichmay bepla'ce'd in the pipeleading from the carbureter to the manifold ofthe engine and which'will produce a plurality of T. CURTIS, a-

i oppositely whirling currents in the gaseous drawn through the mixer bythe A further object is mixture suction of thepiston. to provide for -amaximum number of these oppositely whirling currents in order toinhorough mixture of the gas and manifold.

The invention will be first hereinafter described in connection with theaccompanying drawings and then more specifically defined 'in the claimsat the end of the specification.

- ing partly shown in section In the accompanying drawings, whereinsimilar reference characters are used to 'designate corresponding partsthroughout'the several views: 7

Figure 1- is an elevation of a carbureter and manifold, the pipeconnecting them beand the mixer in elevation. y

Fig. '2 is anenlarged broken elevation, of

the mixer.

f IV of Fig. 2,

Fig. 3 is a plan view of, the smaller end portion of the mixer, and

Fig. lis a sectional view on the line IV- drawn to a'larger scale.

The carbureter 1 and manifold 2 shown in the drawing may be of any knownconstruction, and the mixer 45 is placed in the pipe 3 leading from thecarbureter to the manifold, being secured by having its flange 5 clampedbetween the meeting ends of the pipe sections. The mixer is formedgenerally in the shape of a hollow cone in order to leave a surroundingspace between ltSo body and the inner wall of thepipe extending to theflange 5.

The mixer 'is preferably made of sheet metal and in its body are cut aplurality of VIRGINIA, AND ONE-HALF TO Gaseous-F EL MIXER.

v M v Specification of Letters Patent. 7

' Application filed June 28, 1916.

three rows of larger end of the mixer,.

/ tween the currents formed by said smaller end of the mixer.

inclined in the opposite direction ing current in the same duced in ofrows of JOSEPH; 'r. CURTIS, 0F Minn om), VIRGINIA, assIeNon ROSA s. W neSerial No. 106,509.

rows of'slots right, one of said frows beingadyacent the anotheradjacent the smaller end thereof, and a third row encircling the middleof the are two rowsof between the middle row ofslots 6 and rows of slots6 near the opposite ends of the mixer. Each of the slots 6 and 7 isformed by cuttinga slit in thebody of themixer, and turning out one edgeto form. a; lip 8, Fig. 4, which together with the incline of the ormanna its at;

' manta aai ia' aia 6 and 7. 7 As shown, there are .slots 6 inclinedtoward the mixer, while there 1 slots 7- arranged respectively the slotserves-to impart a whirling motionto the currents of, gas and airpassing through the slot. It will thus rows of, slots 6 will producecurrents whirling about the body of the mixer in one direction, whilethe two rows of slots 7 will pro 'duce currents whirling about the bodyof in the opposite direction and bethe rows of slots 6. In this way, thegas and air in these oppositely moving currents will be most intimatelyand thoroughl mixed before. entering the manifold. a

As an additional means of accomplishing. the desired object, the smallerend of the body of the mixer is provided with acircular series of curvedor. inclinedblades orv fins 9 each overhanging an opening 10 in Theseblades the mixer orfins are to the row of slots 6 near the smaller endof the mixer and serve to create a hirdwhirl ,direction as the currentsformed by the two rows of slots 7. Thus, three whirling currents will bepro each direction and the currents in one direction will alternate withthose in the opposite direction. Of course, the number slots in the bodythe spacing of the slots in each row and the size ofthe slots may bevaried as found necessary or desirable. Being 'aware that be seen thatthe three of the mixer, v

these and other changes in details may be made in the constructionherein shown and described without departing from the'spi'rit of myinvention, Ireserve the right to make such modifications as fairly fallWithin the scope of the appended claims.

Having thus described-my invention, what I claim as new and desire tosecure by Letters Patent of the United States is:

1. A gaseous fuel mixer of the character rows for directing the gaseouscurrents described consisting of a hollow cone having a plurality ofencirclingrows of slots there-' in, the slots in alternate rows beinginclin d in fie V 2. A; gaseous fuel mixer of the character describedvconsisting of a hollow cone havin a plurality of encircling rows of'slots therein, and an outwardly turned lip at one edge of each .of theslots, the lips being arranged 011 opposite sides of .the slots inalternate pass (ppposite directions for the purpose spe i lngthrouglrsaid around the cone.

slots in opposite directions ing said opening ing a central opening inits smaller end, and a CilClllih series of inclined bladesoverhangin-g-said opening for imparting a whirlin' movement to thegaseous currents which pass througlrthe 'same, the cone also having anencircling row of slots formed to direct the gaseous currents which passthrough them in the opposite direction to. the currents which smallerend of the cone.

5. A gaseous fuel mixer of the character described'consisting of ahollow cone havin a plurality of encircling rows of'slots there- "11,the slots in alternate rows being formed to direct the ,gaseous currentspassing through them in opposite directions, the cone also having acentral opening in its smaller end and inclined blades overhangfordirecting the gaseous currents passing therethrough in'the oppositedirection to the'currents passing through the adjacent row of slots.

In testimony whereof I have signed my name to thisspecification.

JOSEPH T. CURTIS.

pass through the opening in the

